CN110061157A - A kind of cap assembly and the secondary cell comprising it - Google Patents
A kind of cap assembly and the secondary cell comprising it Download PDFInfo
- Publication number
- CN110061157A CN110061157A CN201910441821.1A CN201910441821A CN110061157A CN 110061157 A CN110061157 A CN 110061157A CN 201910441821 A CN201910441821 A CN 201910441821A CN 110061157 A CN110061157 A CN 110061157A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- sealing element
- cap assembly
- insulating part
- aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 239000000758 substrate Substances 0.000 claims abstract description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000003466 welding Methods 0.000 claims description 7
- 239000012212 insulator Substances 0.000 claims description 2
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention discloses a kind of cap assembly and the secondary cell comprising it, cap assembly therein includes link block, the first insulating part, substrate, the second insulating part, sealing element and pole, pole includes the cylinder of pedestal and projection on pedestal, aperture is offered on substrate, the size of aperture is greater than the size of cylinder, cylinder passes through aperture and connect with link block, in the gap that the lateral wall of aperture is arranged in sealing element hole wall and cylinder is formed, first insulating part is arranged between link block and substrate, and the second insulating part is arranged between substrate and pedestal.This cap assembly eliminates riveting operation, and manufacture craft is simple and has good sealing effect.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of cap assembly and include its secondary cell.
Background technique
The cap assembly of battery is mounted on battery case, and existing cap assembly generallys use riveting aluminium block and pole is first
The fixed form of laser welding after riveting, and be arranged between riveting aluminium block and pole insulating part and seal washer realize insulation and
Sealing effect, but structure is complicated for the cap assembly of such sealing structure, and assembly difficulty influences production efficiency, directly results in production
Increased costs.In addition, the high temperature that seal washer is easy to be hermetically laser welded generation is influenced and deformed, sealing effect is influenced.
Summary of the invention
The first purpose of this invention is to provide a kind of cap assembly, and eliminate riveting operation, manufacture craft is simple,
Sealing effect is good.
Second object of the present invention is to provide a kind of secondary cell, and sealing effect is good.
To achieve this purpose, the present invention adopts the following technical scheme:
On the one hand provide a kind of cap assembly, including link block, the first insulating part, substrate, the second insulating part, sealing element and
Pole, the pole include the cylinder of pedestal and projection on the base, and aperture is offered on the substrate, the aperture
Size is greater than the size of the cylinder, and the cylinder passes through the aperture and connect with the link block, the sealing element setting
In the gap that the hole wall of the aperture and the lateral wall of the cylinder are formed, first insulating part is arranged in the link block
Between the substrate, second insulating part is arranged between the substrate and the pedestal.
As a preferred solution of the present invention, it is arranged fluted on the sealing element, the notch of the groove is towards institute
State pedestal.
As a preferred solution of the present invention, the width of rebate of the groove is greater than the slot bottom width of the groove.
As a preferred solution of the present invention, in a ring, the grove shaped circumferential is provided with the sealing to the sealing element
On part.
As a preferred solution of the present invention, mounting groove, the sealing element portion are offered on the lateral wall of the cylinder
Set up separately and be placed in the mounting groove, the part that the sealing element protrudes from the mounting groove is abutted with the hole wall of the aperture.
As a preferred solution of the present invention, through-hole is offered on the link block, the cylinder protrudes from described
The part of one insulator is located in the through-hole.
As a preferred solution of the present invention, the cylinder and the connection block welding.
As a preferred solution of the present invention, first insulating part and second insulating part with the cylinder
Lateral wall abuts.
As a preferred solution of the present invention, the one end and second insulating part of the sealing element close to the pedestal
Interval setting.
On the other hand, a kind of secondary cell is provided, includes cap assembly described in any of the above-described technical solution.
Beneficial effects of the present invention:
This cap assembly eliminates riveting operation, and manufacture craft is simple and has good sealing effect.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of the cap assembly of the embodiment of the present invention；
Fig. 2 is the exploded view of Fig. 1 embodiment；
Fig. 3 is existing battery cap component assembling schematic diagram；
Fig. 4 is the diagrammatic cross-section of sealing element of the embodiment of the present invention.
In Fig. 1-4:
1, link block；11, through-hole；2, the first insulating part；3, substrate；31, aperture；4, the second insulating part；5, sealing element；
51, groove；6, pole；61, pedestal；62, cylinder；
1 ', link block a；2 ', first insulating part a；3 ', substrate a；4 ', second insulating part a；5 ', sealing element a；61 ', pedestal
a；62 ', cylinder a.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature the "upper" of second feature include fisrt feature second feature just
Top and oblique upper, or first feature horizontal height is merely representative of higher than second feature.Fisrt feature is in the "lower" of second feature
It is directly below and diagonally below the second feature including fisrt feature, or is merely representative of first feature horizontal height less than second feature.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.
As shown in Figure 1 to Figure 2, the cap assembly of the present embodiment includes plate link block 1, the first insulating part 2, substrate 3, second
Insulating part 4, sealing element 5 and pole 6, pole 6 include the cylinder 62 of pedestal 61 and projection on pedestal 61, are offered on substrate 3
Aperture 31, the size of aperture 31 are greater than the size of cylinder 62, and cylinder 62 passes through aperture 31 and connect with link block 1, and sealing element 5 is set
It sets in the gap that the hole wall of aperture 31 and the lateral wall of cylinder 62 are formed, the first insulating part 2 is arranged in link block 1 and substrate 3
Between, the second insulating part 4 is arranged between substrate 3 and pedestal 61.
As shown in figure 3, existing battery cap component by sealing element a5 ' setting between substrate a3 ' and pedestal a61 ',
During link block a1 ' and cylinder a62 ' connection, sealing element a5 ' makes sealing element a5 ' generation hang down for by certain pressure
Directly in the reaction force of the upper surface pedestal a61 ', to make cylinder a62 ' generation far from the trend of link block a1 ' movement.Therefore,
In such sealing structure, before being welded to connect block a1 ' and cylinder a62 ', need first by link block a1 ' and cylinder a62 ' into
Row riveting is fixed, and link block a1 ' is prevented to be detached from before welding with cylinder a62 '.
And the gap that the present embodiment is formed by the lateral wall of hole wall and cylinder 62 that sealing element 5 is arranged in aperture 31
In, make sealing element 5 while playing sealing function, also to the lateral wall of cylinder 62 and the hole wall of aperture 31 apply pressure to
Generate certain frictional force, prevent pole 6 from loosening from substrate 3, fixed function played to pole 6, thus be welded to connect block 1 with
Before cylinder 62, it is not necessary that link block 1 and cylinder 62 are carried out riveting fixation, manufacture craft is simplified.
Preferably, it is arranged fluted 51 on sealing element 5, the notch of groove 51 is towards pedestal 61.
Further, as shown in figure 4, the width of rebate of groove 51 is greater than slot bottom width, make the section of groove 51 in loudspeaker
Shape, such structure make sealing element 5 that can carry out a degree of expansion when inside battery air pressure increases, still have in high pressure good
Good leakproofness.
In some embodiments, in a ring, 51 annular of groove is provided on sealing element 5 sealing element 5, and annular shape is convenient for
Processing, and the requirement to machining accuracy is lower, thus manufacture and assembly difficulty can be reduced.
In some embodiments, mounting groove is offered on the lateral wall of cylinder 62,5 sets of parts of sealing element are set to mounting groove
Interior, the part that sealing element 5 protrudes from mounting groove is abutted with the hole wall of aperture 31.By opening up this mounting groove, it can be achieved that sealing element 5
It fast and accurately positions, keeps assembling process more convenient, meanwhile, certain fixed function is also played to sealing element 5, prevents from sealing
Part 5 occurs to slide and influence sealing effect in assembling process.
Further, it is also provided with locating slot on the hole wall of aperture 31, to further increase the assembly precision of sealing element 5,
Reduce assembly difficulty.
Preferably, through-hole 11 is offered on link block 1, the part that cylinder 62 protrudes from the first insulating part 2 is located at through-hole 11
Interior, cylinder 62 is welded in the through-hole 11 of link block 1.Cylinder 62 is welded in the through-hole 11 of link block 1, weld interface is made
Area is larger, ensure that the secured, reliable of connection.
Preferably, the first insulating part 2 and the second insulating part 4 are abutted with the lateral wall of cylinder 62.Because position is arranged in sealing element 5
The reason of setting, the first insulating part 2 and the second insulating part 4 can directly be abutted with the lateral wall of cylinder 62, eliminate the first insulating part 2
Cavity between the lateral wall of cylinder 62 and between the second insulating part 4 and the lateral wall of cylinder 62, so that pole 6 and substrate
It insulate well between 3.
As shown in figure 3, existing battery cap component by sealing element a5 ' setting between substrate a3 ' and pedestal a61 ',
In assembling process, because being under pressure extensional deformation can occur for sealing element a5 ', therefore, must set in advance around sealing element a5 '
Cavity is counted, provides the space of stretching, extension for sealing element a5 '.Therefore the second insulating part a4 ' and the first insulating part a2 ' is and sealing element
There are cavitys between a5 ', and cavity weakens insulation effect.
Further, the lower end of sealing element 5 and the second insulating part 4 interval are arranged.
Since the lower surface of pedestal 61 needs soldering polar ear, the heat that welding process generates is easy to become sealing element 5 by heat
The lower end of sealing element 5 and the second insulating part 4 interval are arranged, play the effect of isolation welding heat, effectively prevent close by shape
During soldering polar ear temperature distortion occurs for sealing 5, ensure that sealing effect.
And in existing battery cap component as shown in Figure 3, since sealing element a5 ' is directly contacted with pedestal a61 ',
In order to avoid making sealing element a5 ' generation temperature distortion during soldering polar ear, pedestal a61 ' need to have biggish thickness, with
So that the heat in welding process is unlikely to rapid and is conducted in large quantities to sealing element a5 '.And thicker sealing element a5 ' makes second
The thickness of insulating part a4 ' increases with it, and is unfavorable for promoting the energy density of battery.The prior art goes up punching press step in substrate a3 '
Sealing element a5 ' and part the second insulating part a4 ' are placed in step structure by structure, so that whole thickness is unlikely to increase
Excessively, but thus it need to increase stamping procedure in the production technology of substrate a3 '.And the sealing element 5 of the present embodiment not with bottom
Seat 61 contacts, therefore can directly adopt the pedestal 61 of relatively small thickness, to eliminate the process for carrying out punching press to substrate 3, improves
Production efficiency, reduces costs.
The embodiment of the present invention also provides a kind of secondary cell, includes the cap assembly of any of the above-described embodiment, compares
In the prior art, the operation for riveting link block 1 and pole 6 is eliminated, assembly technology is simplified, there is good sealing
Effect.
The cap assembly of the embodiment of the present invention uses following assembly method: the second insulating part 4 being placed on bottom first
On seat 61, sealing element 5 is set on the lateral wall of cylinder 62, and cylinder 62 is then made to pass through the aperture 31 on substrate 3, the second insulation
Part 4 is fixed between pedestal 61 and substrate 3, between the lateral wall of hole wall and cylinder 62 that sealing element 5 is located at aperture 31 is formed
In gap.At this point, pole 6 and substrate 3 are fixed, then the first insulating part 2 is placed on substrate 3 due to the effect of 5 frictional force of sealing element
On, link block 1 is placed on the first insulating part 2, is located at cylinder 62 in the through-hole 11 of link block 1, since sealing element 5 provides
Frictional force, pole 6 keeps opposing stationary with link block 1 always, finally welds cylinder 62 along through-hole 11 and link block 1 completes dress
Match.
As the preferred embodiment of the invention, in the description of this specification, reference term " preferred ", " optional "
Deng description to mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained in of the invention
In at least one embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical
Embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be implemented in any one or more
It can be combined in any suitable manner in example or example.
Above embodiments are only used to illustrate detailed protocol of the invention, and the invention is not limited to above-mentioned detailed protocols, i.e.,
Do not mean that the present invention must rely on above-mentioned detailed protocol and could implement.It should be clear to those skilled in the art, right
Any improvement of the invention, the addition of equivalence replacement and auxiliary element to each raw material of product of the present invention, the selection of concrete mode
Deng all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of cap assembly, which is characterized in that including link block, the first insulating part, substrate, the second insulating part, sealing element and
Pole, the pole include the cylinder of pedestal and projection on the base, and aperture is offered on the substrate, the aperture
Size is greater than the size of the cylinder, and the cylinder passes through the aperture and connect with the link block, the sealing element setting
In the gap that the hole wall of the aperture and the lateral wall of the cylinder are formed, first insulating part is arranged in the link block
Between the substrate, second insulating part is arranged between the substrate and the pedestal.
2. cap assembly according to claim 1, which is characterized in that fluted, the groove is arranged on the sealing element
Notch towards the pedestal.
3. cap assembly according to claim 2, which is characterized in that the width of rebate of the groove is greater than the groove
Slot bottom width.
4. cap assembly according to claim 2, which is characterized in that the sealing element in a ring, open by the grove shaped circumferential
It is located on the sealing element.
5. cap assembly according to claim 2, which is characterized in that mounting groove is offered on the lateral wall of the cylinder,
The sealing element part is set in the mounting groove, the sealing element protrude from the mounting groove part and the aperture
Hole wall abuts.
6. cap assembly according to claim 1, which is characterized in that offer through-hole, the cylinder on the link block
The part for protruding from the first insulator is located in the through-hole.
7. cap assembly according to claim 6, which is characterized in that the cylinder and the connection block welding.
8. cap assembly according to claim 1, which is characterized in that first insulating part and second insulating part are equal
It is abutted with the lateral wall of the cylinder.
9. cap assembly according to claim 8, which is characterized in that the one end and institute of the sealing element close to the pedestal
State the setting of the second insulating part interval.
10. a kind of secondary cell, which is characterized in that include the described in any item cap assemblies of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441821.1A CN110061157B (en) | 2019-05-24 | 2019-05-24 | Top cover assembly and secondary battery comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910441821.1A CN110061157B (en) | 2019-05-24 | 2019-05-24 | Top cover assembly and secondary battery comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110061157A true CN110061157A (en) | 2019-07-26 |
| CN110061157B CN110061157B (en) | 2022-09-13 |
Family
ID=67324495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910441821.1A Active CN110061157B (en) | 2019-05-24 | 2019-05-24 | Top cover assembly and secondary battery comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110061157B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115986278A (en) * | 2022-12-09 | 2023-04-18 | 常州瑞德丰精密技术有限公司 | Method for assembling shell and top cover |
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| US20110052940A1 (en) * | 2009-08-25 | 2011-03-03 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN102074676A (en) * | 2010-12-31 | 2011-05-25 | 东莞新能源科技有限公司 | Power battery |
| CN103620827A (en) * | 2011-05-25 | 2014-03-05 | 丰田自动车株式会社 | Hermetically sealed battery |
| CN105470417A (en) * | 2014-09-02 | 2016-04-06 | 宁德时代新能源科技股份有限公司 | Power battery top cover |
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| CN207338444U (en) * | 2017-09-15 | 2018-05-08 | 陆国强 | A kind of Novel square cover plate of power battery |
| EP3331051A1 (en) * | 2016-12-02 | 2018-06-06 | Contemporary Amperex Technology Co., Limited | Top cover assembly for power battery and power battery having the same |
-
2019
- 2019-05-24 CN CN201910441821.1A patent/CN110061157B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060246346A1 (en) * | 2001-10-18 | 2006-11-02 | Clay Kishiyama | Electrical battery assembly and method of manufacture |
| US20110052940A1 (en) * | 2009-08-25 | 2011-03-03 | Samsung Sdi Co., Ltd. | Secondary battery |
| CN102074676A (en) * | 2010-12-31 | 2011-05-25 | 东莞新能源科技有限公司 | Power battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115986278A (en) * | 2022-12-09 | 2023-04-18 | 常州瑞德丰精密技术有限公司 | Method for assembling shell and top cover |
| CN115986278B (en) * | 2022-12-09 | 2023-12-01 | 东莞瑞德丰精密科技有限公司 | Method for assembling shell and top cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110061157B (en) | 2022-09-13 |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 516006 No. 38 Huifeng seven road, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant after: EVE ENERGY Co.,Ltd. Applicant after: Hubei EVE Power Co.,Ltd. Address before: 516006 No. 38 Huifeng seven road, Zhongkai hi tech Zone, Huizhou, Guangdong Applicant before: EVE ENERGY Co.,Ltd. Applicant before: HUBEI JINQUAN NEW MATERIAL CO.,LTD. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |